Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual nação terminou com 11 medalhas de prata?
 ###Tabelas: CREATE TABLE medal_table (medal_table_id AUTO_INCREMENT PRIMARY KEY, Rank VARCHAR, Nation VARCHAR, Gold INT, Silver INT, Bronze INT, Total INT) CREATE TABLE administrative_division (administrative_division_id AUTO_INCREMENT PRIMARY KEY, s Car plate (starting 1937) VARCHAR, Voivodeship or city VARCHAR, Capital VARCHAR, Area (1930) in 1,000skm 2 VARCHAR, Population (1931) in 1,000s VARCHAR) CREATE TABLE argentine_clubs_in_international_competitions (argentine_clubs_in_international_competitions_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Intercontinental VARCHAR, Recopa 1996 VARCHAR, Supercopa 1996 VARCHAR, CONMEBOL 1996 VARCHAR, Copa Libertadores 1997 VARCHAR) CREATE TABLE list_of_recent_lower_tier_county_cup_south_winners (list_of_recent_lower_tier_county_cup_south_winners_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Junior (South) Winners VARCHAR, Intermediate (South) Winners VARCHAR, Minor (South) Winners VARCHAR, Primary (South) Winners VARCHAR) CREATE TABLE episode_information (episode_information_id AUTO_INCREMENT PRIMARY KEY, Episode Number VARCHAR, Broadcast Date VARCHAR, Title VARCHAR, Written by VARCHAR, Viewership (Millions) INT)  
SELECT Nation FROM medal_table WHERE Silver = 11